Open AccessMonetary‐based availability: A novel approach to assess the performance of wind turbines
Author(s) -
Lutz MarcAlexander,
Görg Philip,
Faulstich Stefan,
Cernusko Robert,
Pfaffel Sebastian
Publication year - 2020
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.2411
Subject(s) - downtime , wind power , revenue , turbine , electricity , production (economics) , electricity market , scheduling (production processes) , earnings , economics , business , microeconomics , operations management , reliability engineering , finance , engineering , electrical engineering , mechanical engineering
Abstract With the background of numerous wind turbines phasing out of fixed feed‐in tariffs in the following years and an increasing share of negative electricity market prices on the spot market, the availability definitions of “time‐based” and “production‐based” availability are possibly no longer suitable for assessing the overall performance of a wind turbine. This paper introduces a novel definition: the “monetary‐based” availability. The differences between the established definitions and the “monetary‐based” availability are highlighted by comparing the measures on an empirical data set. Furthermore, results on the impact of scheduling planned downtimes towards a monetary‐based optimum show that revenues can be increased. By shifting only a small share of the annual downtime to an optimum to maximize the revenue from electricity, a strong increase in additional earnings and thereby an increasment of the monetary‐based availability can be achieved.